US5454522A - Apparatus for breaking solid objects - Google Patents

Apparatus for breaking solid objects Download PDF

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Publication number
US5454522A
US5454522A US08/223,046 US22304694A US5454522A US 5454522 A US5454522 A US 5454522A US 22304694 A US22304694 A US 22304694A US 5454522 A US5454522 A US 5454522A
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US
United States
Prior art keywords
backing
rotor
knives
knife
axis
Prior art date
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Expired - Fee Related
Application number
US08/223,046
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English (en)
Inventor
Patrick J. Ballu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tecnoma SA
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Tecnoma SA
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Publication date
Application filed by Tecnoma SA filed Critical Tecnoma SA
Assigned to TECNOMA reassignment TECNOMA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BALLU, PATRICK JEAN-MARIE
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Publication of US5454522A publication Critical patent/US5454522A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/182—Disc-shaped knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/30—Rubber elements in mills

Definitions

  • the present invention relates to an apparatus for breaking solid objects, and in particular industrial and domestic waste, with a view to recycling.
  • This apparatus comprises a support hopper with an entry opening in the top and an exit opening in the bottom, a rotor, having a of horizontal axis and carrying two radial knives, and a set of backing knives, integral with the support hopper, between which the knives pass during the rotation of the rotor.
  • These backing knives are grouped in a comb and a backing comb, an object moved by the rotor in its rotation successively encountering the comb and then the backing comb.
  • the active surface of the backing knives of the comb is straight and toothed, that is to say that it has notches which constitute stops which arrest the movement of an object to be broken.
  • the axial gap between a knife of the rotor and the adjacent backing knives of the comb is relatively large, for example 5 to 10 mm, and this part of the apparatus acts as a grinder, while the axial gap between a knife of the rotor and the adjacent backing knives of the backing comb is much smaller, for example 0.5 to 1 mm, so that this part operates as a cutter, whence the name "grinder/cutter" frequently given to this type of apparatus.
  • the apparatus operates at relatively low rotational speeds of the rotor, for example of the order of 20 r.p.m., so that it is not very noisy.
  • rotation in the opposite direction through approximately one revolution makes it possible to remove it through an auxiliary orifice situated beyond the backing comb, in the normal rotation direction.
  • French Patent 2,127,685 describes a fairly similar apparatus, except that the backing knives are mounted on a common "anvil", which can pivot with respect to the support hopper about an axis parallel to that of the rotor.
  • This arrangement has the advantage that, when there is an excessively strong object, the anvil, with the backing knives, moves away from the rotor to let this object pass. A return jack then returns the anvil to the normal position.
  • This system is combined with a smooth shape, curved toward the rotor, of the active face of the backing knives, intended to facilitate removal of ungrindable objects, but reduces the efficiency of the apparatus for breaking other objects.
  • U.S. Pat. No. 4,917,310 which corresponds to the preamble of claim 1, describes an apparatus which differs from that of French 127,685 in that the backing knives are straight, and especially in that the backing knives are movable independently of each other, and provided with return means which may consist of fluidic jacks connected to a pneumatic accumulator. This device provides some improvement in efficiency, but this is outweighed by an increase in its complexity.
  • Russian Union Patent 697,186 describes a device for breaking up blocks of reinforced concrete, in which these blocks, sliding over a planar support, are struck by a tool driven in a reciprocating vertical movement using an eccentric device. It seems that the concrete is disintegrated by the repeated impacts, and releases the reinforcement irons. None suggests that these reciprocating movements can be effective in a device operating by cutting for breaking solid objects which may exhibit some degree of flexibility, such as waste, and in preventing clogging.
  • the present invention originates from research for improving the existing equipment as regards its efficiency, reduction of the time lost in the presence of an object which is difficult to grind, as well as decreasing the risks of clogging and improving the maintenance cost.
  • the invention consequently provides an apparatus for breaking solid objects, comprising:
  • a box-shaped support with at least one entry opening at the top and one exit opening at the bottom, this support defining a vertical passage
  • a rotor mounted in the support so as to be able to turn on a substantially horizontal axis without being able to move along this axis, this rotor carrying at least one knife which moves away from the axis,
  • each of the backing knives having an active surface turned toward the rotor and being movable on the support independently of the others, so that its active surface can be moved away from the rotor, return means being provided for returning said active surfaces into a normal position, fixed in advance, the return means of one backing knife being independent of those of the other backing knives,
  • this apparatus comprising means for setting the backing knives in forced oscillation.
  • the apparatus when the return means is a fluidic jack, the apparatus is equipped with means for vibrating the fluid contained in the fluidic jack, this jack then constituting both a return means and a vibration means for the backing knife.
  • the amplitude of the oscillations is limited by an elastomer mass or one or more springs,
  • the backing knives are mounted to pivot on a shaft parallel to the axis of the rotor, this pivot shaft is placed at a small distance from the center of gravity of each backing knife, while being outside the volume swept by the knives of the rotor,
  • the backing knives are mounted to pivot on a shaft parallel to the axis of the rotor, so that, at rest, a plane passing through the axes of said shaft and of the rotor passes approximately through the middle of the active surface of each rotor.
  • a backing knife is carried by a pivot mounted in a fixed position with respect to the support and parallel to the axis of the rotor.
  • the backing knives may be guided on straight or curved slideways, or alternatively on return means, especially formed by springs or elastomer blocks, which might themselves constitute the guide means.
  • fluidic jacks may also be provided. These can be simplified, for example consisting of a projection integral with the backing knife and penetrating into a suitable cavity of the support.
  • the normal position, fixed in advance, of a backing knife is defined by a stop against which the backing knife is pushed by the return means.
  • the backing knives may be common to these rotors, with an active face turned toward each of them.
  • the active surface of the backing knife has a plurality of teeth capable of holding an object being broken, to facilitate its cutting by a knife of the rotor passing between two adjacent backing knives.
  • this feature is here combined with a shape of the active surface of the backing knife such that the apices of the teeth are situated on a curve whose concavity is turned toward the axis of the rotor.
  • the invention provides an appreciable gain if provision is made for the knife holders to be mounted separately from each other and removably, while being fitted onto a common holding piece consisting of a bar parallel to the axis of the rotor and, advantageously, for the knife holders to be mounted separately from each other and removably, while being fitted onto a common holding piece consisting of a bar parallel to the axis of the shaft.
  • FIG. 1 is a simplified overall view, in exploded perspective, of the crusher.
  • FIG. 2 is a section along the line II--II in FIG. 1.
  • FIG. 3 is a detailed view illustrating a variant of the embodiment in FIG. 2.
  • FIG. 4 is a detailed view illustrating a variant of the rotor.
  • the apparatus described by way of example comprises a support 1, comprising of two side panels 2, 3, which are generally vertical, connected together by two small vertical end plates 4, 5.
  • the assembly thus defines a vertical passage, of rectangular general shape.
  • One of the end plates 5 also carries a motor 9 for driving the rotor.
  • One of the side panels 3 has a vertical surface facing the rotor, while the other panel 2 includes an inclined upper part 10, which gives a hopper shape to the internal passage of the support.
  • a pivot 12, parallel to the axis of the rotor 6, is mounted in holes provided in the end plates 4, 5. Only one of these holes, 12A, is shown in FIG. 1.
  • the pivot 12 can slide through these holes, with a view to removal. It is situated toward the lower part of the side panel 2, below the inclined part 10, without projecting into the internal passage of the support. Provision may be made for the pivot 12 to be blocked in rotation on its axis, or to be able to pivot on itself.
  • the rotor 6 carries a series of knives 13, which are made as a thick plate, cut into a general S-shape, with two active faces whose concavity is turned toward the front in the direction of rotation symbolically represented by the arrow 14. The end of each active face constitutes a tooth pointing forward.
  • FIG. 4 shows a variant in which the active face of the rotor 13 has a plurality of teeth 13A.
  • the knives are mounted on the rotor, which passes through them in their central part, without possible rotation relative to the rotor.
  • the rotor has a hexagonal cross section, as does the central bore of the knife. This allows the use of identical knives, offset with respect to one another by one sixth of a turn.
  • a shape for example splined, may be given to the rotor, and a corresponding shape to the bore of the knives.
  • the backing knives 15 are interposed between the knives 13.
  • Each backing knife 15 comprises mainly of a plate of triangular general shape. It will be observed that, in the example described, the knives and the backing knives comprise plates with edges parallel and perpendicular to the axis of the rotor. This arrangement, which makes them easier to obtain, is not essential, and it is contemplated, for example, for the knives to decrease in thickness when moving away from the axis of the rotor, or vice versa, and for the backing knives to have a cross section designed to keep the axial gap between a knife and the adjacent backing knife constant.
  • the active face 16 of the backing knife has a concavity which is turned upward and toward the axis of the rotor. It includes teeth 17, the shape of which is not given precisely, because it depends closely on the nature of the objects to be processed. It will, however, be observed that these teeth advantageously have a side turned away from the direction of rotation 14 of the rotor, and which makes, with the direction of the objects which will strike it, an angle close to 90°, while the opposite side of each tooth is, conversely, close to a parallel to the path of the objects moved by the knives 13.
  • a second side 18 of each triangular plate constituting a backing knife 15 carries a sleeve 19 pointing parallel to the axis of the rotor, and which is passed through by the fixed pivot 12, while allowing pivoting of the backing knife about this shaft.
  • the linkage between the sleeve 19 and the backing knife 15 is provided by two braced plates 20, parallel to the plate 15, solidly attached thereto and offset with respect thereto in the axial direction.
  • the backing knife At rest, the backing knife extends from the vicinity of the lower edge of the inclined part 10 of the side panel 2 to the vicinity of the rotor 6. It moves slightly away from the latter under the thrust of an object to be broken.
  • the thickness of the plates 20, and/or the length of the sleeves 19 are calculated to ensure the desired separation between two adjacent backing knives.
  • bracing sleeves 19A are provided, in a similar manner, between the knives 13, in order to establish between them a spacing equal to the thickness of a backing knife plus twice the value of the intended axial clearance.
  • the thickness of the knives and the backing knives, as well as the axial clearances, and therefore the separation between the successive knives and backing knives can be adapted as a function of the nature of the material of the objects to be ground, as well as the shape, the dimensions and the particle size, both of these objects and of the products which it is desired to obtain.
  • the plates 20 also carry an arm 21, which extends upward parallel to the side 18, the extension of which passes substantially through the axis of the pivot 12.
  • the arm 21 carries a stop 22, perpendicular to the arm 21, and the axis of which is in the plane of the backing knife 15.
  • This stop 22 penetrates into a closed-bottomed collar 23, which is fixed onto the inclined part 10 of the side panel 2.
  • An elastomer mass 24 is interposed between the stop 22 and a bearing plate 25 situated in the vicinity of the bottom of the collar 23.
  • a set screw 26 makes it possible to separate the bearing plate 25 from the bottom of the collar to a greater or lesser extent.
  • the set screw 26 is mounted in the arm 21, to act on the stop 22. This arrangement allows easier access to the screw 21. Furthermore, the bearing plate 25 may then be eliminated, the elastomer mass 22 then bearing against the bottom of the collar 23.
  • a stop 27 limits the amplitude of the pivoting in the opposite direction of the backing knife, it prevents the latter from coming into contact with the rotor and defines its normal position.
  • the arm 21 carries a projection 30, forming a piston, which penetrates into a cylinder 31, connected to a vibrational source 32 of pressurized fluid, such as oil, and to a gas pressure accumulator 33.
  • the fluid keeps the backing knife in the state of forced oscillations, while, when an object to be broken pivots the backing knife on the pivot 12, the presence of the accumulator 33 makes the cylinder 31 act as an elastic return member.
  • the return means 20 to 26, 30, 31 are in front of the pivot 12, in the direction of rotation of the rotor 13, indicated by the arrow 14.
  • the return means it is sufficient for the return means to be arranged so as to oppose pivoting of the backing knife resulting from the passage of an object to be ground.
  • the center of gravity G of the knife holder 15 is at the smallest possible distance from the pivot 12, considering the fact that this pivot must be outside the volume swept by the knives 13 of the rotor.
  • the plane containing the axes of the pivot 12 and of the rotor 6, which is symbolically represented by the line A--A in FIG. 2, passes approximately through the middle of the active surface 16 of the backing knife.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
US08/223,046 1993-04-16 1994-04-05 Apparatus for breaking solid objects Expired - Fee Related US5454522A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9304526 1993-04-16
FR9304526A FR2703928B1 (fr) 1993-04-16 1993-04-16 Appareil pour fragmenter des objets solides.

Publications (1)

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US5454522A true US5454522A (en) 1995-10-03

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US08/223,046 Expired - Fee Related US5454522A (en) 1993-04-16 1994-04-05 Apparatus for breaking solid objects

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US (1) US5454522A (fr)
EP (1) EP0620043A3 (fr)
JP (1) JP2666177B2 (fr)
FR (1) FR2703928B1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1336434A1 (fr) * 2002-02-05 2003-08-20 TBE Habermehl Anlagenbau GmbH & Co. KG Outil de coupe, particulièrement pour déchiqueter de copeaux
WO2004035215A1 (fr) * 2002-10-10 2004-04-29 Metso Lindemann Gmbh Machine pour fragmenter des matieres de tous types, par ex. des dechets ou du bois
US6729566B2 (en) * 2001-04-17 2004-05-04 American Pulverizer Co., Mo. Corp. Multi-sided shaft for a crusher
US20040245360A1 (en) * 2002-09-19 2004-12-09 Hikoichi Katsumura Shredder
US20050116075A1 (en) * 2002-03-25 2005-06-02 Donat Bosch Crushing device
US20060243836A1 (en) * 2004-03-19 2006-11-02 Peterson Arnold N Material reducing apparatus
US20070241218A1 (en) * 2004-03-19 2007-10-18 Peterson Pacific Corporation Material reducing apparatus
US7322538B1 (en) * 1997-11-27 2008-01-29 Metallgesellschaft Ag Slag crusher
KR100837304B1 (ko) 2007-09-10 2008-06-12 재경산업 주식회사 파쇄 칼날
US20110089279A1 (en) * 2008-07-09 2011-04-21 Rapid Granulator Ab Granulator housing and a method for mounting/dismounting a knife therein
CN103657808A (zh) * 2012-09-24 2014-03-26 爱信Ai株式会社 切屑切碎装置、切屑切碎刀、切屑切碎数据的收集方法
US9925541B2 (en) 2013-09-18 2018-03-27 American Pulverizer Company Pretensioning cable assembly for securing a crusher/shredder rotor intact upon its shaft
RU2786113C1 (ru) * 2022-10-13 2022-12-19 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" Роторно-центробежный диспергатор
CN118142660A (zh) * 2024-05-09 2024-06-07 兰州理工大学 一种中药材粉碎研磨机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4914013B2 (ja) * 2005-03-03 2012-04-11 伝導工業株式会社 プラスチックボトル破砕機及びプラスチックボトル破砕方法
KR101703145B1 (ko) * 2015-09-11 2017-02-06 (주)헬퍼로보텍 압축상토블록 파쇄 및 공급장치
KR102328789B1 (ko) * 2021-03-31 2021-11-18 주식회사 에코프라임 페트병 전용 분쇄기

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US1524675A (en) * 1924-03-22 1925-02-03 Marion Machine Foundry & Suppl Crusher
US3005637A (en) * 1958-09-08 1961-10-24 Polaris Inc Straw cutters and spreaders
FR2127685A5 (fr) * 1971-02-23 1972-10-13 Benson Ind Ltd
FR2254371A1 (en) * 1973-12-14 1975-07-11 Artesienne Const Mec Refuse comminuter with helical set of blades - has refuse forced through narrow gap between combs beneath blades
US3952957A (en) * 1973-10-15 1976-04-27 Edgard Jacques Maillet Shredding unit for conditioning scrap metal parts having a maximum thickness of 5 millimeters
US4017035A (en) * 1974-07-27 1977-04-12 Hazemag Dr. E. Andreas Kg Impact crusher with adjustable impact or grinding means
US4077573A (en) * 1976-01-23 1978-03-07 Amf Incorporated Independently mounted thresher cutters
US4801101A (en) * 1987-08-05 1989-01-31 Gruendler Crusher And Pulverizer, Co. Wallboard cutter
US4972999A (en) * 1990-01-02 1990-11-27 Amana Refrigeration, Inc. Ice piece barrier for selective ice crusher dispenser

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GB1372776A (en) * 1972-08-25 1974-11-06 Rose Downs & Thompson Ltd Lump breaker
FR2233470A1 (en) * 1973-06-18 1975-01-10 Testut Aequitas Large scale waste disposal unit - has cooperating blades on rotary cylinder and pivoting door within duct
SU697186A1 (ru) * 1977-07-27 1979-11-15 Специальное Конструкторское Бюро Треста "Ленинградоргстрой" Ордена Ленина Главленинградстроя Установка дл разрушени железобетонных изделий
DE2916513A1 (de) * 1979-04-24 1980-11-06 Ibag Vertrieb Gmbh Zerkleinerungsmaschine
GB2061128B (en) * 1979-10-20 1983-08-10 Ofrex Group Ltd Document shredding machines
US4489896A (en) * 1983-03-30 1984-12-25 Manlio Cerroni Processing apparatus for solid urban refuse and plastic bags filled with same
JPS62258760A (ja) * 1986-05-01 1987-11-11 川崎重工業株式会社 解砕機の自動運転制御方法
US4917310A (en) * 1989-02-27 1990-04-17 Sorain Cecchini Recovery, Incorporated Processing apparatus for solid refuse
US5110060A (en) * 1990-10-09 1992-05-05 Lundquist Lynn C Cutter enhancement for plastic size reduction equipment

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Publication number Priority date Publication date Assignee Title
US1524675A (en) * 1924-03-22 1925-02-03 Marion Machine Foundry & Suppl Crusher
US3005637A (en) * 1958-09-08 1961-10-24 Polaris Inc Straw cutters and spreaders
FR2127685A5 (fr) * 1971-02-23 1972-10-13 Benson Ind Ltd
US3952957A (en) * 1973-10-15 1976-04-27 Edgard Jacques Maillet Shredding unit for conditioning scrap metal parts having a maximum thickness of 5 millimeters
FR2254371A1 (en) * 1973-12-14 1975-07-11 Artesienne Const Mec Refuse comminuter with helical set of blades - has refuse forced through narrow gap between combs beneath blades
US4017035A (en) * 1974-07-27 1977-04-12 Hazemag Dr. E. Andreas Kg Impact crusher with adjustable impact or grinding means
US4077573A (en) * 1976-01-23 1978-03-07 Amf Incorporated Independently mounted thresher cutters
US4801101A (en) * 1987-08-05 1989-01-31 Gruendler Crusher And Pulverizer, Co. Wallboard cutter
US4972999A (en) * 1990-01-02 1990-11-27 Amana Refrigeration, Inc. Ice piece barrier for selective ice crusher dispenser

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7322538B1 (en) * 1997-11-27 2008-01-29 Metallgesellschaft Ag Slag crusher
US6729566B2 (en) * 2001-04-17 2004-05-04 American Pulverizer Co., Mo. Corp. Multi-sided shaft for a crusher
EP1336434A1 (fr) * 2002-02-05 2003-08-20 TBE Habermehl Anlagenbau GmbH & Co. KG Outil de coupe, particulièrement pour déchiqueter de copeaux
US20050116075A1 (en) * 2002-03-25 2005-06-02 Donat Bosch Crushing device
US7216824B2 (en) * 2002-09-19 2007-05-15 Matsui Mfg. Co. Ltd. Shredder with oscillating side walls
US7448568B2 (en) * 2002-09-19 2008-11-11 Matsui Mfg. Co., Ltd. Shredder with rotatable sidewall
US20040245360A1 (en) * 2002-09-19 2004-12-09 Hikoichi Katsumura Shredder
US20060180688A1 (en) * 2002-09-19 2006-08-17 Matsui Mfg. Co., Ltd. Shredder
GB2410908A (en) * 2002-10-10 2005-08-17 Metso Lindemann Gmbh Grinding machine for all kinds of material, e.g. waste or wood
US20060065769A1 (en) * 2002-10-10 2006-03-30 Bernard Kock Grinding machine for all kinds of material, e. g. waste or wood
WO2004035215A1 (fr) * 2002-10-10 2004-04-29 Metso Lindemann Gmbh Machine pour fragmenter des matieres de tous types, par ex. des dechets ou du bois
US7237739B2 (en) 2002-10-10 2007-07-03 Metso Lindemann Gmbh Grinding machine and method of grinding material
US20070241218A1 (en) * 2004-03-19 2007-10-18 Peterson Pacific Corporation Material reducing apparatus
US20060243836A1 (en) * 2004-03-19 2006-11-02 Peterson Arnold N Material reducing apparatus
US7232084B2 (en) * 2004-03-19 2007-06-19 Peterson Pacific Corporation Material reducing apparatus
US7832670B2 (en) 2004-03-19 2010-11-16 Astec Industries, Inc. Material reducing apparatus
KR100837304B1 (ko) 2007-09-10 2008-06-12 재경산업 주식회사 파쇄 칼날
US20110089279A1 (en) * 2008-07-09 2011-04-21 Rapid Granulator Ab Granulator housing and a method for mounting/dismounting a knife therein
CN103657808A (zh) * 2012-09-24 2014-03-26 爱信Ai株式会社 切屑切碎装置、切屑切碎刀、切屑切碎数据的收集方法
CN103657808B (zh) * 2012-09-24 2016-04-06 爱信Ai株式会社 切屑切碎装置、切屑切碎刀、切屑切碎数据的收集方法
US9925541B2 (en) 2013-09-18 2018-03-27 American Pulverizer Company Pretensioning cable assembly for securing a crusher/shredder rotor intact upon its shaft
RU2786113C1 (ru) * 2022-10-13 2022-12-19 федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный технологический университет им. В.Г. Шухова" Роторно-центробежный диспергатор
CN118142660A (zh) * 2024-05-09 2024-06-07 兰州理工大学 一种中药材粉碎研磨机

Also Published As

Publication number Publication date
JPH06320036A (ja) 1994-11-22
FR2703928B1 (fr) 1995-06-23
EP0620043A2 (fr) 1994-10-19
JP2666177B2 (ja) 1997-10-22
EP0620043A3 (fr) 1995-03-29
FR2703928A1 (fr) 1994-10-21

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